NGC7023 (vdB139) and VdB141 (SH2-136) Mosaic (Jan Bielański)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD200099 · HD200775 · HD202181 · Iris Nebula · LBN 475 · LBN 483 · LBN 487 · LBN 495 · LDN 1167 · LDN 1168 · LDN 1170 · LDN 1171 · LDN 1172 · LDN 1173 · LDN 1174 · LDN 1177 · NGC 7023 · PGC 166711 · PGC 2730428 · PGC 2817439 · PGC 65642 · PGC 66063 · Sh2-136 · T Cep · VdB141

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NGC7023 (vdB139) and VdB141 (SH2-136) Mosaic

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NGC7023 (vdB139) and VdB141 (SH2-136) Mosaic

Mosaic of the Iris Nebula (NGC7023/VdB139) and Ghost Nebula (VdB141/SH2-136).
Wide field image mosaic in the Cepheus constellation, size of the field is:
[3d 22' 17"]x[2d 57' 40"], where: d - degrees / ' - minutes / " - angular seconds.
For comparison the Moon have near 30 minutes on the sky, so in this image field we can put
the Moon forty times.

Objects: NGC7023/vdB139 and VdB141/SH2-136
Telescope: Tele Vue NP127is
Mount: iOptron CEM60-EC
Accessories: Tele Vue LCL1069
Session, filters and exposition:
-> NGC7023/vdB139: 17,18,19.08.2022
- Baader CMOS Optimized R 42x300s
- Baader CMOS Optimized G 42x300s
- Baader CMOS Optimized B 42x300s
-> VdB141/SH2-136: 3,4,5,6,7.06.2021
- Baader L 2" 50x300s
- Baader G 2" 8x600s
- Baader B 2" 9x600s
- Baader R 2" 8x600s
Total time: 1130min -> 18h 50min
Camera: QHY 600M
- Camera temperature: -15C
- Other parameters: Mode: 1 / Gain (ISO) 56
Image processing:
- PixInsight
- Blur,Star,NoiseXterminator
- GraXpert

Poland

NGC7023 and VdB141

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	6869704
PixInsight job	8H7VM69R133M92INECV9TLV1FVT2CZZL
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h09m00s.82
RA (top/left)	20h51m18s.72
RA (top/right)	21h25m15s.87
RA (bottom/right)	21h29m02s.22
RA (bottom/left)	20h50m24s.69

Dec (center)	+68°08′58″.6
Dec (top/left)	+66°41′00″.2
Dec (top/right)	+66°32′36″.1
Dec (bottom/right)	+69°29′01″.8
Dec (bottom/left)	+69°38′33″.4

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Contribution Index (beta):

NGC7023 (vdB139) and VdB141 (SH2-136) Mosaic

NGC7023 (vdB139) and VdB141 (SH2-136) Mosaic

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Image Index:

Contribution Index (beta):

NGC7023 (vdB139) and VdB141 (SH2-136) Mosaic

NGC7023 (vdB139) and VdB141 (SH2-136) Mosaic

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Acquisition details

Description

Comments

Sky plot

Histogram

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